Alert archive / Indiana / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 113, NWS Northern Indiana

August 19, 2007Cass County, Pulaski County, White County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Aug 19, 2007, 9:48 PM EDT for Cass County, Pulaski County, White County, Indiana. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 19, 2007, 9:48 PM EDT (01:48 UTC)
Expired
Aug 19, 2007, 10:45 PM EDT
In force
57 min
Issued by
NWS Northern Indiana
Area
Counties, with a storm outline in the text

Counties Cass County, IN, Pulaski County, IN, White County, IN

The radar

The Northern Indiana radar (KIWX), 106 km from the middle of the area, began a volume at 01:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.8 hours before the alert went out and 174 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2007-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2651 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2007-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2651 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
978 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KIWX 200148
SVRIWX
INC017-131-181-200245-
/O.NEW.KIWX.SV.W.0113.070820T0148Z-070820T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
948 PM EDT SUN AUG 19 2007

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CASS COUNTY IN NORTH CENTRAL INDIANA
  SOUTHEASTERN PULASKI COUNTY IN NORTHWEST INDIANA
  WHITE COUNTY IN NORTHWEST INDIANA

* UNTIL 1045 PM EDT

* AT 947 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS SEVERE STORM WAS LOCATED NEAR WOLCOTT...OR ABOUT
  14 MILES WEST OF MONTICELLO...AND MOVING EAST AT 30 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
  LEE...
  REYNOLDS...SMITHSON AND CHALMERS...
  MONON...
  MONTICELLO...
  INDIANA BEACH...NORWAY AND SITKA...
  LAKESIDE...

THIS IS A DANGEROUS SEVERE THUNDERSTORM. IF YOU ARE IN THE PATH...
PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH....ALONG
WITH DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO
A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM
WINDOWS.

LAT...LON 4085 8711 4086 8700 4092 8698 4092 8694
      4095 8694 4116 8657 4095 8648 4092 8648
      4091 8646 4071 8636 4070 8652 4075 8653
      4074 8674 4059 8678 4058 8710
TIME...MOT...LOC 0148Z 260DEG 29KT 4075 8702

$$
1 follow-up statement
000 
WWUS53 KIWX 200213
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1013 PM EDT SUN AUG 19 2007

INC017-131-181-200245-
/O.CON.KIWX.SV.W.0113.000000T0000Z-070820T0245Z/
PULASKI IN-CASS IN-WHITE IN-
1013 PM EDT SUN AUG 19 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHWESTERN CASS COUNTY IN NORTH CENTRAL INDIANA...AND
NORTHEASTERN WHITE AND SOUTHEASTERN PULASKI COUNTIES IN NORTHWEST
INDIANA...

AT 1009 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS SEVERE STORM WAS LOCATED NEAR INDIANA BEACH...
OR ABOUT OVER MONTICELLO...AND MOVING EAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SITKA...BUFFALO...LAKESIDE...IDAVILLE...HEADLEE...BELL CENTER...
PULASKI...BURNETTSVILLE...RIPLEY...WINAMAC...LAKE CICOTT...
BEARDSTOWN...GEORGETOWN...STAR CITY...VANMETER PARK...THORNHOPE...
ROYAL CENTER...LAWTON...CLYMERS AND DUNKIRK.

IF YOU HAVE SEVERE WEATHER TO REPORT...YOU CAN CALL YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4092 8698 4092 8694 4095 8694 4116 8657
      4092 8648 4091 8646 4071 8636 4070 8652
      4075 8653 4074 8675 4059 8678 4070 8689
      4085 8700
TIME...MOT...LOC 0213Z 260DEG 29KT 4078 8676

$$

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 20, 10:55 AM EDTRiver Flood WarningIWXAllen, DeKalb10 days
Aug 20, 10:55 AM EDTRiver Flood WarningIWXAllen60 hr
Aug 20, 6:06 PM EDTRiver Flood WarningIWXLaPorte, Saint Joseph, Starke12 days

Nearby

Severe Thunderstorm Warnings in Indiana, 2007Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.